Stupid question i know but.... source?Obama thinks there are 3 billion more humans than the Earth can sustain.
So killing off po folks will possibly save the planet.
Best way to do it is by starting a war in the Middle-East, aborting millions of babies, opening up all borders to spread infectious deseases that have been irradicated for decades, and using inoculations to plant germs in people giving them deseases rather than preventing them.